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Formaldehyde eliminating agent and preparation method thereof

A formaldehyde remover and stabilizer technology, used in aldehyde/ketone condensation polymer adhesives, adhesives, adhesive types, etc., can solve the problems of reducing the efficiency and mechanical properties of urea-formaldehyde resin production of wood-based panels, and achieve formaldehyde removal. Long-lasting effect, lower formaldehyde emission, convenient use effect

Inactive Publication Date: 2012-04-04
BEIJING FORESTRY UNIVERSITY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The primary purpose of the present invention is to provide a formaldehyde scavenger that can be directly added to the urea-formaldehyde resin adhesive for the problems existing in the prior art. Excellent efficiency and mechanical properties, fundamentally eliminate the formaldehyde pollution problem in indoor air caused by wood-based panels and their products

Method used

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  • Formaldehyde eliminating agent and preparation method thereof
  • Formaldehyde eliminating agent and preparation method thereof
  • Formaldehyde eliminating agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1. Press the following weight ratio for raw material preparation

[0032] Water milk -type epoxy resin (50 % solid content): 200kg

[0033] Water: 400kg

[0034] Borax: 0.5kg

[0035] Melamine: 400kg

[0036] Sodium hydroxide solution (30 % concentration): appropriate amount

[0037] Peronic acid solution (concentration of 20 %): appropriate amount

[0038] 2. Add water, borax, and melamine to the reactor in turn, stir, heat up to 40 ° C, and stir well.

[0039] 3. The temperature increases to 70-72 ° C, the reaction is 30 minutes, the pH value of sodium hydroxide is 6.0-8.0, the cooling to 30 ° C, and the discharge.

[0040]

[0041] Table 1 Formaldehyde elimination agent product technical indicators

[0042]

Embodiment 2

[0044] 1. Press the following weight ratio for raw material preparation

[0045] Water -soluble epoxy resin (50 % solid content): 300kg

[0046] Distilled water: 800kg

[0047] Borax and calcium polarizes mixed: 1kg

[0048] Melamine: 800kg

[0049] 2. The synthetic process is the same as the embodiment 1.

[0050]

[0051] Table 2 Formaldehyde elimination agent product technical indicators

[0052]

Embodiment 3

[0054] 1. Press the following weight ratio for raw materials:

[0055] Water -based epoxy resin (50 % solid content): 500kg

[0056] Remove water: 1000kg

[0057] Mixed borax and sodium polarized boric acid: 8KG

[0058] Melamine: 1000kg

[0059] 2. The synthetic process is the same as the embodiment 1.

[0060]

[0061] Table 3 Formaldehyde elimination agent product technical indicators

[0062]

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Abstract

The invention discloses a formaldehyde eliminating agent and a preparation method thereof. The formaldehyde eliminating agent consists of the following raw materials in part by weight: 100 to 300 parts of water borne epoxy resin (solid), 200 to 1,000 parts of melamine, 100 to 1,000 parts of water, and 0.1 to 10 parts of stabilizing agent. The preparation method for the formaldehyde eliminating agent comprises the following steps of: 1) sequentially adding the raw materials into a reaction kettle according to the raw material proportion of claim 1 or 2 with stirring, controlling the heating temperature at 40 to 60 DEG C, fully stirring the raw materials uniformly, and regulating the pH to be between 5.0 and 5.5 by using acid; and 2) heating the raw materials to the temperature of between 75 and 80 DEG C, reacting for 30 minutes, regulating the pH value to be between 6.0 and 8.0 by using alkali, cooling the reaction product to the temperature of 30 DEG C, and discharging.

Description

[0001] Technical field [0002] The present invention involves a preparation and preparation methods that eliminate harmful chemicals, and especially involve a preparation and preparation method for eliminating formaldehyde. [0003] Background technique [0004] With the continuous improvement of people's living standards, decoration and purchase of new furniture have become common things in people's lives.Decoration and furniture manufacturing often use a large number of artificial plates, such as plywood, fine woodwork, medium -density fiber board, and particle board.In 2009, the output of Chinese artificial boards has exceeded 100 million m 3 , For many years in the world first.90 % of the adhesives used in these artificial boards are rigiddehyde resin and its modified products. There are problems with formaldehyde release, which often become the main source of formaldehyde pollution in indoor air.Although the amount of formaldehyde release of these artificial boards will gra...

Claims

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Application Information

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IPC IPC(8): C09J11/08C09J11/06C09J11/04C09J161/24
Inventor 李建章张世锋刘江波于洋周文瑞高强
Owner BEIJING FORESTRY UNIVERSITY
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